4.7 Article

A zig-zag naphthodithiophene core for increased efficiency in solution-processed small molecule solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 68, Pages 8511-8513

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc32646a

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Funding

  1. ANSER Center
  2. Energy Frontier Research Center
  3. U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001059]
  4. NSF Center for Layered Polymeric Systems (CLiPS) [DMR-0423914]
  5. Polyera Corporation

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A solution-processed small molecule utilizing a novel 4,9-bis(2-ethylhexyloxy) naphtho[1,2-b:5,6-b']dithiophene zig-zag'' core (zNDT) exhibits high hole mobility, upshifted frontier MO energies, and enhanced photovoltaic cell short-circuit currents, fill-factors, and power conversion efficiencies (4.7%) versus the linear NDT isomer.

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